What is 20 divided by 740 with remainder

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9

If you could answer these your a life saver

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?